caicancai commented on code in PR #4172:
URL: https://github.com/apache/calcite/pull/4172#discussion_r1934185151
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testkit/src/main/java/org/apache/calcite/test/SqlOperatorTest.java:
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@@ -5823,6 +5823,38 @@ void testBitGetFunc(SqlOperatorFixture f, String
functionName) {
f0.forEachLibrary(libraries, consumer);
}
+ @Test void testHex() {
+ SqlOperatorFixture sqlOperatorFixture = fixture();
+ final SqlOperatorFixture f0 =
sqlOperatorFixture.setFor(SqlLibraryOperators.HEX);
+ f0.checkFails("^hex('')^",
+ "No match found for function signature HEX\\(<CHARACTER>\\)",
+ false);
+ final Consumer<SqlOperatorFixture> consumer = f -> {
+ f.checkString("hex('abc')",
+ "616263",
+ "VARCHAR NOT NULL");
+ f.checkString("hex('')", "", "VARCHAR NOT NULL");
+ f.checkNull("hex(cast(null as varbinary))");
+ };
+ f0.forEachLibrary(list(SqlLibrary.HIVE, SqlLibrary.SPARK), consumer);
+ }
+
+ @Test void testUnHex() {
+ SqlOperatorFixture sqlOperatorFixture = fixture();
+ final SqlOperatorFixture f0 =
sqlOperatorFixture.setFor(SqlLibraryOperators.UNHEX);
+ f0.checkFails("^unhex('')^",
+ "No match found for function signature UNHEX\\(<CHARACTER>\\)",
+ false);
+ final Consumer<SqlOperatorFixture> consumer = f -> {
+ f.checkString("unhex('616263')",
+ "abc",
+ "VARCHAR NOT NULL");
+ f.checkString("unhex('')", "", "VARCHAR NOT NULL");
+ f.checkNull("unhex(cast(null as varbinary))");
Review Comment:
Are you sure that unhex(0) is equal to null? I tested it in Spark and the
result is [00]
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